C – Parting bead. There's two parting beads positioned on either side from the sash box, functioning vertically from leading to base among the sashes. Just about every fifty percent area of a Ventrolla parting bead includes a draught-proofing system that faces the adjacent sash, forming a comfortable temperature seal.  The sash excess weight https://commercial-tiling-service34444.onesmablog.com/the-greatest-guide-to-sash-windows-76581488